I replaced the EGR Valve on my 99 Ford 150 P/U 4.6l engine. After replacing the valvwe the check engine light is still on and I still get a code P0401. What else do I need to do?
Friday, July 6th, 2007 AT 6:59 PM
If you did not clear out the codes then they will stay stored in the computer, clear them out and see if they come back on.
Friday, July 6th, 2007 AT 7:03 PM
I cleared the code and it came back. I did this twice. At the emissons testing center they told me something about a drive time to allow the computer to recognize the new EGR Valve. If the prob was corrected then shouldn't the code stay clear?
Saturday, July 7th, 2007 AT 11:45 AM
Take the egr off again and clear the port of carbon all the way to the throttle plate. I use a steel coathangar. Reset the light. If it comes on after this replace the egr position sensor.